$OpenBSD: patch-include_Taggle_impl_html_HTMLScanner_hpp,v 1.1 2017/05/21 09:50:45 espie Exp $
Nope you can't add numbers to strings

Index: include/Taggle/impl/html/HTMLScanner.hpp
--- include/Taggle/impl/html/HTMLScanner.hpp.orig
+++ include/Taggle/impl/html/HTMLScanner.hpp
@@ -5,6 +5,7 @@
 #include <SAX/Locator.hpp>
 #include <XML/XMLCharacterClasses.hpp>
 #include "../Scanner.hpp"
+#include <sstream>
 
 namespace Arabica
 {
@@ -473,7 +474,10 @@ class HTMLScanner : public Scanner, public SAX::Locato
           outputBuffer_.clear();
           break;
         default:
-          throw std::runtime_error("Can't process state " + action);
+	    std::ostringstream f("Can't process state ");
+	    f << action;
+	    std::string msg = f.str();
+          throw std::runtime_error(msg);
       } // switch ...
       state_ = nextState_;
     } // while (state_ != S_DONE) 
